package cn.bugstack.domain.strategy.service;

import cn.bugstack.domain.strategy.model.entity.RaffleAwardEntity;
import cn.bugstack.domain.strategy.model.entity.RaffleFactorEntity;
import cn.bugstack.domain.strategy.model.entity.StrategyAwardEntity;
import cn.bugstack.domain.strategy.repository.IStrategyRepository;
import cn.bugstack.domain.strategy.service.armory.IStrategyDispatch;
import cn.bugstack.domain.strategy.service.rule.chain.factory.DefaultChainFactory;
import cn.bugstack.domain.strategy.service.rule.tree.factory.DefaultTreeFactory;
import cn.bugstack.types.enums.ResponseCode;
import cn.bugstack.types.exception.AppException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

import java.util.Date;

/**
 * @author 19872
 * 抽奖策略抽象类
 */
@Slf4j
public abstract class AbstractRaffleStrategy implements IRaffleStrategy{

    // 策略仓储服务 -> domain层像一个大厨，仓储层提供米面粮油
    protected IStrategyRepository repository;
    // 策略调度服务 -> 只负责抽奖处理，通过新增接口的方式，隔离职责，不需要使用方关心或者调用抽奖的初始化
    protected IStrategyDispatch strategyDispatch;
    // 默认工厂
    protected DefaultChainFactory defaultChainFactory;
    protected DefaultTreeFactory defaultTreeFactory;

    public AbstractRaffleStrategy(IStrategyRepository repository, IStrategyDispatch strategyDispatch, DefaultChainFactory defaultChainFactory,DefaultTreeFactory defaultTreeFactory) {
        this.repository = repository;
        this.strategyDispatch = strategyDispatch;
        this.defaultChainFactory = defaultChainFactory;
        this.defaultTreeFactory = defaultTreeFactory;
    }


    @Override
    public RaffleAwardEntity performRaffle(RaffleFactorEntity raffleFactorEntity) {
        // 1.参数校验
        String userId = raffleFactorEntity.getUserId();
        Long strategyId = raffleFactorEntity.getStrategyId();
        Date endDateTime = raffleFactorEntity.getEndDateTime();
        if (strategyId == null || StringUtils.isBlank(userId)) {
            throw new AppException(ResponseCode.ILLEGAL_PARAMETER.getCode(), ResponseCode.ILLEGAL_PARAMETER.getInfo());
        }

        // 2.责任链抽奖计算【这步拿到的是初步抽奖ID，之后需要根据ID处理抽奖】注意：黑名单、权重等非默认抽奖的直接返回抽奖结果
        DefaultChainFactory.StrategyAwardVo chainStrategyAwardVo = raffleLogicChain(userId, strategyId);
        log.info("抽奖策略计算-责任链 {} {} {} {}", userId, strategyId, chainStrategyAwardVo.getAwardId(), chainStrategyAwardVo.getLogicModel());
        if (!DefaultChainFactory.LogicModel.RULE_DEFAULT.getCode().equals(chainStrategyAwardVo.getLogicModel())) {
            return buildRaffleAwardEntity(strategyId, chainStrategyAwardVo.getAwardId(), chainStrategyAwardVo.getAwardConfig());
        }

        //3. 规则树抽奖过滤【奖品ID，会根据抽奖次数判断、库存判断、兜底兜回返回最终的可获得奖品信息】
        DefaultTreeFactory.StrategyAwardVO treeStrategyAwardVO = raffleLogicTree(userId, strategyId, chainStrategyAwardVo.getAwardId(),endDateTime);
        log.info("抽奖策略计算-规则树 {} {} {} {}", userId, strategyId, treeStrategyAwardVO.getAwardId(), treeStrategyAwardVO.getAwardRuleValue());
        return buildRaffleAwardEntity(strategyId,treeStrategyAwardVO.getAwardId(),treeStrategyAwardVO.getAwardRuleValue());
    }


    /**
     * 抽奖奖品信息补全
     * @return 抽奖奖品信息
     */
    private RaffleAwardEntity buildRaffleAwardEntity(Long strategyId,Integer awardId,String awardConfig){

        StrategyAwardEntity strategyAwardEntity = repository.queryStrategyAwardEntity(strategyId,awardId);

        return RaffleAwardEntity.builder().awardId(awardId)
                .awardTitle(strategyAwardEntity.getAwardTitle())
                .awardConfig(awardConfig)
                .sort(strategyAwardEntity.getSort())
                .build();
    }



    /**
     * 抽奖计算，责任链抽象方法
     *
     * @param userId     用户ID
     * @param strategyId 策略ID
     * @return 奖品信息
     */
    public abstract DefaultChainFactory.StrategyAwardVo raffleLogicChain(String userId, Long strategyId);

    /**
     * 抽奖结果过滤，决策树抽象方法
     *
     * @param userId     用户ID
     * @param strategyId 策略ID
     * @param awardId    奖品ID
     * @return 过滤结果【奖品ID，会根据抽奖规则判断、库存判断、兜底积分返回最终的可获得奖品信息】
     */
    public abstract DefaultTreeFactory.StrategyAwardVO raffleLogicTree(String userId, Long strategyId, Integer awardId,Date endDateTime);
}
